Perhaps you should try some spelling variations:
doanh khoa » toan khoa
hoc doanh » hoa doanh, hoc danh, hoc dan
toc sach » doc sach, thuoc sach, nuoc sach
hoc sach » hoc sinh, hoc cac, hoc anh
cuu tong » cuu cong, cuu tinh, huu tung
tong hoc » tuong hoc, thong hoc, trong hoc
khoa hoc » hoa hoc
nhan tao » nhan tai, nhan dan
doi tai » hoi tai, dai tai, doi tac
va nhan » van nhan, ca nhan, va phan
hoc xa » hoc ma

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) OR (hoc sach)) doi tai, nghien cuu tong hoc doanh khoa hoc xa hoi va nhan tao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) OR (hoc sach)) doi tai, nghien cuu tong hoc doanh khoa hoc xa hoi va nhan tao".
• Adding a wildcard symbol may retrieve word variants: ((toc sach) OR (hoc sach)) doi tai, nghien cuu tong hoc doanh khoa hoc xa hoi va nhan tao*.